ZENITH 140 INSTRUCTION MANUAL
82
The third parameter for each relay determines the pump group. You can
have two groups of pumps, and all similar duties within that group will
operate together.
P212, 222, 232, 242, 252, 262 – Relay Pump Group
By default, all pump groups are set to 1, but if you want to have another
group, then set this parameter to 2, for each pump relay that should operate
together as part of a second group.
The fourth parameter and the fifth parameter for each relay set the pump
“ON” and “OFF” points, which are entered in Measurement units P104. For
pump down the “ON” is set higher than “OFF”. For pump up then “ON” is
set lower than “OFF”. See the appropriate pump duty, function table
(P212, 222, 232, 242, 252, 262) for further information.
P213, 223, 233, 243, 253, 263 – Relay Setpoint 1
This parameter determines the ‘ON’ point of the pump.
P214, 224, 234, 244, 254, 264 – Relay Setpoint 2
This parameter determines the ‘OFF’ point of the pump.
The sixth parameter will determine the service ratio that will be used to
switch the pump, when pump duty selected is a Service Ratio duty.
P210, 220, 230, 240, 250 = 6, 7 or 9 (Service ratio)
P215, 225, 235, 245, 255, 265 – Relay Setpoint 3
This parameter determines the Service Ratio in values of %. See the
appropriate pump duty function, table (P211, 221, 231, 241, 251, 261), for
further information.
P219, 229, 239, 249, 259, 269 – Relay Max Rate
This parameter will allow a pump to be switched at a pre-determined Rate
of change of Level, irrespective of the “ON” level setpoint P213, 223, 233,
243, 253, 263. Once a pump relay has been switched “ON” by the pre-
determined Rate of Change, it will remain energised until the level reaches
the “OFF” level setpoint P214, 224, 234, 244, 254, 264.
Max. Rate is entered in Measurement Units (P104) per minute and can be
entered as either positive (increasing level) or negative (decreasing level)
values.
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